Home / 2,979.06-4,099.05-2,902.74

Finding the Fourth Proportional to 2,979.06, 4,099.05 and 2,902.74

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Solution

The fourth proportional to 2,979.06, 4,099.05 and 2,902.74 is: 3,994.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.06 : 4,099.05 = 2,902.74 : x
  2. Step 2: Convert to fraction form
    2,979.06/4,099.05 = 2,902.74/x
  3. Step 3: Cross multiply
    2,979.06x = 4,099.05 × 2,902.74
  4. Step 4: Simplify right side
    2,979.06x = 11,898,476.40
  5. Step 5: Solve for x
    x = 11,898,476.40/2,979.06
  6. Step 6: Final answer
    x = 3,994.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.